Finding the Fourth Proportional to 129,437.28, 194,202.64 and 45,209.84
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Solution
The fourth proportional to 129,437.28, 194,202.64 and 45,209.84 is: 67,831.08
Step by Step Solution
- Step 1: Write the proportion equation
129,437.28 : 194,202.64 = 45,209.84 : x - Step 2: Convert to fraction form
129,437.28/194,202.64 = 45,209.84/x - Step 3: Cross multiply
129,437.28x = 194,202.64 × 45,209.84 - Step 4: Simplify right side
129,437.28x = 8,779,870,281.98 - Step 5: Solve for x
x = 8,779,870,281.98/129,437.28 - Step 6: Final answer
x = 67,831.08
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.